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Finding the Fourth Proportional to 562,761, 776,629.80 and 308,114.28

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Solution

The fourth proportional to 562,761, 776,629.80 and 308,114.28 is: 425,208.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,761 : 776,629.80 = 308,114.28 : x
  2. Step 2: Convert to fraction form
    562,761/776,629.80 = 308,114.28/x
  3. Step 3: Cross multiply
    562,761x = 776,629.80 × 308,114.28
  4. Step 4: Simplify right side
    562,761x = 239,290,731,653.54
  5. Step 5: Solve for x
    x = 239,290,731,653.54/562,761
  6. Step 6: Final answer
    x = 425,208.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.